Twenty One Pilots may just be a duo, but the group has learned that size matters.

And size, these days, is working to the advantage of the pair from Columbus, Ohio.

After making a name for itself with 2013's "Vessel" -- its major label debut and first as a duo -- Twenty One Pilots debuted at No. 1 on the Billboard 200 with last year's "Blurryface." The set scored a chart-topping rock radio hit with the triple-platinum "Stressed Out," while tracks such as "Fairly Local," "Tear In My Heart" and "Ride" became new staples for the group.

And its just-started Emotional Roadshow tour is the biggest production the group has taken on the road to date -- although percussionist Josh Dun says that comes with a price.

"They're bigger venues, and I think that something that's always been so important to me is kind of a feeling of togetherness," Dun, 27, who joined forces with singer and multi-instrumentalist Tyler Joseph in 2011, says by phone. "As we start to play bigger shows i really miss the bar and club shows because of...The word people use a lot is the intimacy factor, which I love. I love that whole factor and how close we are with everybody.

"So I think it really is kind of figuring out how to take an arena an make it feel like a club...creating different moments in the set that kind of capitalizes on the intimacy feel."

One would think that success to this point would give Dun and Joseph a degree of confidence moving forward. But the drummer says the duo revels in its neuroses -- and hopefully uses them to its creative advantage.

"This album is talking about a lot of insecurity and stuff, and a lot of that has to do wtih the live show," Dun explains. "Walking on stage, just the two of us, and realizing there's this whole thing to overcome, it's almost like this sort of battle we have to fight every night that is really us trying to overcome our insecurity.

"And I think there's something important about that, which is working as hard as we possibly can every night, whether it's trying to win over a crowd or at the very least trying to meet the expectations of what everybody in that room has of us. It can drive you crazy -- but's incredibly motivating, too."

Twenty One Pilots, Mutemath and Chef'Special

7 p.m. Friday, June 3.

DTE Energy Music Theatre, Sashabaw Road east of i-75, Independence Township. Tickets are sold out.